CN204691839U - Four valve camshaft of car engine - Google Patents
Four valve camshaft of car engine Download PDFInfo
- Publication number
- CN204691839U CN204691839U CN201520336720.5U CN201520336720U CN204691839U CN 204691839 U CN204691839 U CN 204691839U CN 201520336720 U CN201520336720 U CN 201520336720U CN 204691839 U CN204691839 U CN 204691839U
- Authority
- CN
- China
- Prior art keywords
- intake
- camshaft
- valve
- car engine
- same cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The utility model discloses a kind of Four valve camshaft of car engine, comprise camshaft body (1), intake cam (2) is set respectively at two intake valves of described camshaft body (1) each cylinder upper corresponding, it is characterized in that: the center line of the peach point of two intake cams (2) that two intake valves of same cylinder are corresponding intersects and forms angle (a).The utility model is by the several angle that staggered by the peach point of two of same cylinder intake cams that intake valve is corresponding, air-flow is made one in front and one in back to enter firing chamber, be conducive to forming intake swirl, improve combustion efficiency, considerably reduce the generation of phenomenon of detonation, reduce engine abnormal noise, finally reach energy-conservation object.
Description
Technical field
The utility model relates to a kind of engine cam, particularly a kind of Four valve camshaft of car engine.
Background technique
In four stroke engine, air/fuel mixed gas enters motor to be needed by valve, and the promotion of valve is dependence rotating cam axle, makes nose promotion tappet that valve is opened, and valve spring is then responsible for valve to back into closed position.
At existing Four valve (each cylinder two intake valves, two exhaust valves, on corresponding camshaft, each cylinder designs two intake cams and two exhaust cams) in motor, two intake valves of same cylinder are that (the peach point of the intake cam of two intake valves of same cylinder is in same direction for unlatching simultaneously, simultaneously closedown, peach point centerline parallel), like this, two bursts of air inlets enter simultaneously, and be unfavorable for the formation of mixed gas eddy current, combustion efficiency is lower.Meanwhile, because mixed gas not easily forms eddy current, cause mixed gas more weak to the cooling effect in firing chamber, easily occur that temperature is too high in firing chamber, cause the mixed gas limit to be burnt, thus the phenomenon of pinking occurs, motor sends abnormal sound.
Model utility content
For existing problem, the purpose of this utility model is to provide a kind of Four valve camshaft of car engine being conducive to forming intake swirl, avoid phenomenon of detonation.
To achieve these goals, the technical solution of the utility model is: a kind of Four valve camshaft of car engine, comprise camshaft body, on described camshaft body, two intake valves of each cylinder corresponding arrange intake cam respectively, it is characterized in that: the center line of the peach point of two intake cams that two intake valves of same cylinder are corresponding intersects and forms angle.
Adopt such scheme, the peach point of two corresponding for two of same cylinder intake valves intake cams is staggered, that is, when air inlet, make the start-up time of two intake valves of same cylinder different, air-flow is one in front and one in back entered, the two strands of airflow collisions one in front and one in back entered, form eddy current, thus are conducive to reducing the temperature in firing chamber, improve combustion efficiency, significantly reduce pinking occurrence probability.
As preferably: the angle of the center line of the intake cam that two intake valves of same cylinder are corresponding is 4 °-18 °.The angle staggered within the scope of this, strength of vortex is large, burns more abundant.
As preferably: the angle of the center line of the intake cam that two intake valves of same cylinder are corresponding is 6 °-10 °.Strength of vortex is large, avoids phenomenon of detonation.
In such scheme: the angle of the center line of the intake cam that two intake valves of same cylinder are corresponding is 4 °.Strength of vortex is large, improves combustion efficiency.
In such scheme: described camshaft body is the camshaft of four stroke engine, this camshaft body is provided with eight intake cams.
The beneficial effects of the utility model are: the utility model is by the several angle that staggered by the peach point of two of same cylinder intake cams that intake valve is corresponding, air-flow is made one in front and one in back to enter firing chamber, be conducive to forming intake swirl, improve combustion efficiency, considerably reduce the generation of phenomenon of detonation, reduce engine abnormal noise, finally reach energy-conservation object.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described:
Wait the position of the noun of locality only in representative graph up and down in the utility model, do not represent the absolute position of product.
Embodiment 1
As shown in Figure 1: Four valve camshaft of car engine of the present utility model is made up of parts such as camshaft body 1, intake cams 2.
This camshaft is the camshaft of four-stroke Four valve, and each cylinder corresponding arranges two intake cams 2 and two exhaust cams.Come to eight intake cams 2 and eight exhaust cams (exhaust cam not shown in FIG.), this is prior art, does not repeat at this.
In order to reduce phenomenon of detonation, improve efficiency gas, the peach point that we design two intake cams 2 corresponding to two intake valves of same cylinder as Fig. 1 staggers several angle, also just upper theory, and the center line of the peach point of the intake cam 2 that two intake valves of same cylinder are corresponding intersects and forms angle a.Further in order to form the larger eddy current of intensity, this angle a is 4 °-18 °.Further: to select angle a to be 6 °-10 °.The strength of vortex formed is larger.Further: angle a is 4 °.
By the intake cam 2 of two intake valves is staggered, this just causes two valve opening time differences of same cylinder, the two strands of air-flows one in front and one in back entered more easily form eddy current, the eddy current of this formation can reduce the temperature in firing chamber, improve combustion efficiency, avoid the mixed gas limit to burn, thus reduce the generation of phenomenon of detonation.
More than describe preferred embodiment of the present utility model in detail.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to design of the present utility model without the need to creative work.Therefore, all technician in the art according to design of the present utility model on the basis of existing technology by the available technological scheme of logical analysis, reasoning, or a limited experiment, all should by the determined protection domain of claims.
Claims (5)
1. a Four valve camshaft of car engine, comprise camshaft body (1), intake cam (2) is set respectively at two intake valves of described camshaft body (1) each cylinder upper corresponding, it is characterized in that: the center line of the peach point of the intake cam (2) that two intake valves of same cylinder are corresponding intersects and forms angle (a).
2. Four valve camshaft of car engine according to claim 1, is characterized in that: the angle (a) of the center line of the intake cam (2) that two intake valves of same cylinder are corresponding is 4 °-18 °.
3. Four valve camshaft of car engine according to claim 2, is characterized in that: the angle (a) of the center line of the intake cam (2) that two intake valves of same cylinder are corresponding is 6 °-10 °.
4. Four valve camshaft of car engine according to claim 2, is characterized in that: the angle (a) of the center line of the intake cam (2) that two intake valves of same cylinder are corresponding is 4 °.
5. Four valve camshaft of car engine according to any one of claim 1-4, it is characterized in that, the camshaft that described camshaft body (1) is four stroke engine, this camshaft body (1) is provided with eight intake cams (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520336720.5U CN204691839U (en) | 2015-05-25 | 2015-05-25 | Four valve camshaft of car engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520336720.5U CN204691839U (en) | 2015-05-25 | 2015-05-25 | Four valve camshaft of car engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204691839U true CN204691839U (en) | 2015-10-07 |
Family
ID=54232142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520336720.5U Expired - Fee Related CN204691839U (en) | 2015-05-25 | 2015-05-25 | Four valve camshaft of car engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204691839U (en) |
-
2015
- 2015-05-25 CN CN201520336720.5U patent/CN204691839U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103807057B (en) | A kind of EGR system | |
| CN204691839U (en) | Four valve camshaft of car engine | |
| CN204299729U (en) | A kind of waste gas circulation tubular construction | |
| CN209212375U (en) | Air inlet path for diesel engine | |
| CN202596907U (en) | High-power gas engine inlet | |
| CN113404585B (en) | Combustion chamber and gas engine | |
| CN208858423U (en) | A kind of admission cam shaft of Atkinson cycle | |
| CN104329162A (en) | EVRO (exhaust valve secondary opening) IEGR (internal exhaust gas recirculation) method based on Miller cycle | |
| CN207660656U (en) | A kind of admission cam of supercharged direct-injection engine | |
| CN201934229U (en) | Double-tangential air inlet passage of four-valve cylinder diesel engine | |
| CN205225521U (en) | Air inlet channel of diesel engine | |
| CN205013138U (en) | Diesel engine cylinder cap structure | |
| CN201865812U (en) | Communicated and combined inlet channel device of four-valve diesel | |
| CN203978597U (en) | The firing chamber of gas machine | |
| CN107339150A (en) | A kind of engine chamber for using Fuel Petroleum instead on the basis of diesel engine | |
| CN203948199U (en) | A kind of EGR system | |
| CN203962232U (en) | The air inlet duct part of improvement | |
| CN107100756A (en) | A kind of piston for directly jetting gasoline engine channel-style combustion chamber | |
| CN204591456U (en) | A kind of combustion chamber of petrol engine | |
| CN206860304U (en) | A kind of piston for directly jetting gasoline engine channel-style combustion chamber | |
| CN101984244A (en) | Communicated composite inlet channel system for four-valve diesel engine | |
| CN104879204B (en) | A kind of combustion chamber of petrol engine | |
| CN104533559A (en) | Emission reduction method for retained waste gas in diesel engine in Miller cycle | |
| CN202832821U (en) | Four-valve gas engine | |
| CN207660655U (en) | A kind of exhaust cam of supercharged direct-injection engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20190525 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |